CN216555109U - Torque-adjustable damper - Google Patents
Torque-adjustable damper Download PDFInfo
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- CN216555109U CN216555109U CN202122478959.4U CN202122478959U CN216555109U CN 216555109 U CN216555109 U CN 216555109U CN 202122478959 U CN202122478959 U CN 202122478959U CN 216555109 U CN216555109 U CN 216555109U
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- passing area
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Abstract
The utility model discloses a damper with adjustable torque, which comprises a shell and a rotating shaft, wherein the rotating shaft comprises a plug for sealing an opening at the upper part of the shell, an inner column connected below the plug and an outer column connected above the plug, two ribs are arranged on the inner circumferential surface of the shell, two pushing wings are arranged on the outer circumferential surface of the inner column, the push wings are movably sleeved with blades, the space between the inner peripheral surface of the shell and the outer peripheral surface of the inner column is divided into two high-pressure oil cavities with central symmetry and two low-pressure oil cavities with central symmetry by the ribs, the push wings and the blades, the inner column is internally provided with an adjusting channel communicated with the two high-pressure oil cavities and the two low-pressure oil cavities, and the inner column further comprises an adjusting nail extending into the adjusting channel from bottom to top, and the axial movement of the adjusting nail can change the oil passing area of the adjusting channel. The adjusting nail extends into the adjusting channel, so that the axial length of the damper is not increased, and the damper has the advantage of compact structure.
Description
Technical Field
The utility model relates to a damper, in particular to a damper with adjustable torque.
Background
The working principle of the damper is that the rotating shaft is matched with the shell to form a high-pressure oil cavity, a low-pressure oil cavity and a quick oil passing channel, when the rotating shaft is rotated in the forward direction, the quick oil passing channel is closed, oil in the high-pressure oil cavity can only slowly enter the low-pressure oil cavity to generate a damping effect, when the rotating shaft is rotated in the reverse direction, the quick oil passing channel is opened, and oil in the low-pressure oil cavity directly flows back into the high-pressure oil cavity through the quick oil passing channel to achieve a damping-free effect.
In order to adjust the strength of the damping effect, namely, the torque of the rotating shaft is adjusted, most of the existing dampers are characterized in that the rotating shaft is made into an upper section and a lower section, the upper section and the lower section of the rotating shaft are driven by a spiral inclined plane, and the spring is additionally arranged to apply elastic acting force to the lower section of the rotating shaft so as to further block the axial movement of the lower section of the rotating shaft, so that the torque of the rotating shaft is increased, and the compression degree of the spring is adjusted by the adjusting piece so as to adjust the torque of the rotating shaft. However, the rotating shaft of the adjusting structure is divided into multiple sections, so that the axial length of the damper is increased, the damper is assembled at the pivot part at the rear end of the toilet cover plate, the installation space of the position is limited, and the toilet cover plate cannot be installed smoothly due to the overlong axial length of the damper.
SUMMERY OF THE UTILITY MODEL
The utility model provides a damper with adjustable torque, which is compact in structure. The technical scheme adopted by the utility model for solving the technical problems is as follows:
the damper with adjustable torque comprises a shell and a rotating shaft, wherein the rotating shaft comprises a plug for sealing an opening at the upper part of the shell, an inner column connected below the plug and extending into the shell, and an outer column connected above the plug, two centrosymmetric ribs are arranged on the inner circumferential surface of the shell, two centrosymmetric push wings are arranged on the outer circumferential surface of the inner column, blades are movably sleeved on the push wings, a space between the inner circumferential surface of the shell and the outer circumferential surface of the inner column is divided into two centrosymmetric high-pressure oil cavities and two centrosymmetric low-pressure oil cavities by the ribs, the push wings and the blades, a switchable oil passing channel is formed between the blades and the push wings, the oil passing channel is closed when the rotating shaft rotates forwards and is opened when the rotating shaft rotates backwards, and an adjusting channel communicated with the two high-pressure oil cavities and the two low-pressure oil cavities is arranged inside the inner column, still include from up stretching into down the regulation nail in the regulation passageway, it can to adjust nail axial displacement the oily area of crossing of regulation passageway.
Compared with the background technology, the technical scheme has the following advantages:
when the rotating shaft rotates forwards, the oil passing channel is in a closed state, oil in the high-pressure oil cavity cannot directly enter the low-pressure oil cavity, and only can slowly enter the low-pressure oil cavity through the assembly gap and the adjusting channel, so that a damping effect is generated. When the rotating shaft rotates reversely, the oil passing channel is opened, oil in the low-pressure oil cavity directly and quickly enters the high-pressure oil cavity through the oil passing channel, and the undamped effect is achieved. The oil passing area of the adjusting channel is formed between the outer surface of the adjusting nail and the inner surface of the adjusting channel, the adjusting nail is controlled to be inserted into the depth of the adjusting channel by controlling the axial movement of the adjusting nail, the adjustment of the gap size between the adjusting nail and the adjusting channel is realized, the oil passing area of the adjusting channel is changed, the control of the oil flow rate is realized, and the effect of adjusting the torque under the damping state can be achieved. Because the adjusting channel is directly formed in the inner column and the adjusting nail extends into the adjusting channel, the axial length of the damper is not increased, and the damper has the advantage of compact structure.
Drawings
The utility model is further illustrated by the following figures and examples.
FIG. 1 is a schematic perspective exploded view of the torque adjustable damper of the present invention.
FIG. 2 is a schematic view illustrating the assembly of the rotating shaft and the blades of the torque adjustable damper shown in FIG. 1.
FIG. 3 is a schematic view of the assembly of the shaft and housing of the torque adjustable damper of FIG. 1.
FIG. 4 is an axial cross-sectional schematic view of the torque adjustable damper of FIG. 1.
FIG. 5 is a schematic view showing the oil passing area between the adjustment pin and the adjustment channel in FIG. 4.
FIG. 6 is a schematic radial cross-sectional view of the torque adjustable damper shown in FIG. 1 (with the shaft rotating in the opposite direction).
FIG. 7 is a schematic radial cross-sectional view of the torque adjustable damper shown in FIG. 1 (with the shaft rotating in a forward direction).
Fig. 8 is a schematic view showing the oil in the high pressure oil chamber entering the regulation passage in the state of fig. 7.
Fig. 9 is a schematic view showing the oil in the gallery entering the low-pressure gallery in the state of fig. 7.
FIG. 10 is a graph illustrating the adjustment of the oil through area of the torque adjustable damper shown in FIG. 1.
Detailed Description
Referring to fig. 1 to 9, the damper with adjustable torque includes a housing 10 and a rotating shaft 20, the housing 10 is a substantially cylindrical structure, the top of the housing is provided with an opening for the rotating shaft 20 to be inserted, and two ribs 12 with central symmetry are disposed on the inner circumferential surface of the housing 10. The rotating shaft 20 includes a plug 21 for sealing the upper opening of the housing 10, an inner column 22 connected below the plug and extending into the housing, and an outer column 23 connected above the plug, two pushing wings 24 are arranged on the outer circumferential surface of the inner column 22, and the pushing wings are movably sleeved with blades 25. The space between the inner circumferential surface of the housing 10 and the outer circumferential surface of the inner post 22 is divided into two high-pressure oil chambers 30 with central symmetry and two low-pressure oil chambers 40 with central symmetry by the ribs 12, the pushing wings 24 and the blades 25, a switchable oil passage 26 is further formed between the blades 25 and the pushing wings 24, the oil passage 26 is closed when the rotating shaft rotates forwards (as shown in fig. 7) and opened when the rotating shaft rotates backwards (as shown in fig. 6), and when the oil passage 26 is opened, the oil in the low-pressure oil chamber 40 can flow back into the high-pressure oil chambers 30 through the oil passage 26 quickly. The inner column 22 is provided with an adjusting channel 27 which is communicated with the two high-pressure oil chambers 30 and the two low-pressure oil chambers 40, namely, the high-pressure oil chambers and the low-pressure oil chambers are communicated with the adjusting channel. Still include from up stretching into down adjust the interior regulation nail 50 of passageway, adjust nail 50 axial displacement can change adjust the oily area A of crossing of passageway.
When the rotating shaft 20 rotates forward, the pushing wings 24 and the blades 25 squeeze the oil in the high-pressure oil chamber 30 together, and since the oil passage 26 is closed, the oil in the high-pressure oil chamber 30 slowly flows into the low-pressure oil chamber 40 through the assembly gap between the adjusting passage 27 and the component, and therefore the rotating shaft 20 rotates slowly, which is a damping process. By adjusting the oil passing area a, the flow rate of the oil can be controlled, thereby controlling the rotation torque of the rotating shaft 20.
When the rotating shaft 20 rotates reversely, the pushing wing 24 and the vane 25 press the oil in the low-pressure oil chamber 40 together, and since the oil passing passage 26 is opened, the oil in the low-pressure oil chamber 40 can flow into the high-pressure oil chamber 30 rapidly through the adjusting passage 27, so that the rotating shaft 20 rotates rapidly, which is a damping-free process.
As will be understood by those skilled in the art, the adjusting nail 50 extends into the adjusting channel 27 and occupies the space of the adjusting channel 27, so that the oil passing area A is formed between the gap between the outer surface of the adjusting nail 50 and the inner surface of the adjusting channel 27, and is in the annular surface structure at the position where the gap is narrowest. In addition, the structure of the casing 10, the ribs 12, the inner post 22, the pushing wings 24 and the vanes 25 cooperating to form the high-pressure oil chamber 30 and the low-pressure oil chamber 40 can be referred to the prior art and will not be described in detail.
Preferably, the outer circumferential surface of the inner column 22 is provided with first oil passing holes 28 corresponding to the two high-pressure oil chambers 30 to communicate with the adjusting passage 27, the outer circumferential surface of the inner column is provided with second oil passing holes 29 corresponding to the two low-pressure oil chambers 40 to communicate with the adjusting passage 27, the adjusting passage 27 axially extends through the bottom surface of the inner column 22 and is provided with a conical surface portion 271 in the middle of the side wall thereof, the first oil passing holes 28 and the second oil passing holes 29 are respectively located at the upper and lower sides of the conical surface portion 271, the upper end of the adjusting nail 50 extends into the position of the conical surface portion 271, and the gap between the conical surface portion 271 and the adjusting nail 50 forms the oil passing area a. Due to the tapered surface portion 271 of the adjusting passage 27, the oil passing area can be accurately and regularly controlled when the adjusting pin 50 is axially moved.
Preferably, the adjusting nail 50 penetrates through the bottom wall of the housing 10, and the bottom of the adjusting nail 50 is provided with a threaded joint 52, and the threaded joint 52 is screwed with the housing 10. Therefore, the adjustment screw 50 can be axially extended and retracted steplessly by rotating the threaded joint 52, so that the torque adjustment has the advantage of linear variation.
Preferably, a threaded hole 14 is concavely formed in the lower surface of the bottom wall of the housing 10, and the screw joint 52 is screwed in the threaded hole 14. This further reduces the axial length of the damper, making the damper more compact, while also protecting the threaded joint 52 from accidental contact.
Preferably, with reference to fig. 4 and 10, the distance between the bottom surface of the threaded joint 52 and the bottom surface of the housing 10 is represented by H, and when the bottom surface of the threaded joint 52 is flush with the bottom surface of the housing 10, i.e., H is 0, the size of the oil passing area a is 7.59mm2(ii) a When the bottom surface of the threaded joint 52 is screwed into the screw hole by 0.1mm, namely H is 0.1mm, the size of the oil passing area A is 6.99mm2(ii) a The bottom surface of the threaded joint is screwed into the screw hole by 0.2mm, namely when H is 0.2mm, the size of the oil passing area A is 6.4mm2(ii) a The bottom surface of the threaded joint is screwed into the screw hole by 0.3mm, namely when H is 0.3mm, the size of the oil passing area A is 5.83mm2(ii) a The bottom surface of the threaded joint is screwed into the screw hole by 0.4mm, namely when H is 0.4mm, the size of the oil passing area A is 5.27mm2(ii) a The bottom surface of the threaded joint is screwed into the screw hole by 0.5mm, namely when H is 0.5mm, the size of the oil passing area A is 4.71mm2(ii) a The bottom surface of the threaded joint is screwed into the screw hole by 0.6mm, namely when H is 0.6mm, the size of the oil passing area A is 4.17mm2(ii) a The bottom surface of the threaded joint is screwed into the screw hole by 0.7mm, namely when H is 0.7mm, the size of the oil passing area A is 3.65mm2(ii) a The bottom surface of the threaded joint is screwed into the screw hole by 0.8mm, namely when H is 0.8mm, the size of the oil passing area A is 3.13mm2(ii) a The bottom surface of the threaded joint is screwed into the screw hole by 0.9mm, namely when H is 0.9mm, the size of the oil passing area A is 2.63mm2(ii) a The bottom surface of the threaded joint is screwed into the screw hole by 1.0mm, namely when H is 1.0mm, the size of the oil passing area A is 2.13mm2(ii) a The bottom surface of the threaded joint is screwed into the screw hole by 1.1mm, namely when H is 1.1mm, the size of the oil passing area A is 1.65mm2(ii) a The bottom surface of the threaded joint is screwed into the screw hole by 1.2mm, namely when H is 1.2mm, the size of the oil passing area A is 1.19mm2(ii) a The bottom surface of the threaded joint is screwed into the screw hole by 1.3mm, namely when H is 1.3mm, the size of the oil passing area A is 0.73mm2(ii) a The bottom surface of the threaded joint is screwed into the screw hole by 1.4mm, namely when H is 1.4mm, the size of the oil passing area A is 0.28mm2(ii) a The bottom surface of the threaded joint is screwed into the screw hole by 1.5mm, namely when H is 1.5mm, the size of the oil passing area A is 0.00mm2。
Preferably, the edge of the upper end of the adjusting nail 50 is rounded. Thus, the rounded configuration of the adjustment spike 50 provides for better sealing engagement with the tapered surface portion 271 of the adjustment channel 27 when it is desired to close the adjustment channel 27.
Preferably, the adjusting passage 27 includes a large diameter portion 272, an arc-shaped surface portion 273, a conical surface portion 271 and a small diameter portion 274 from bottom to top in sequence, the width of the adjusting passage decreases step by step from bottom to top, the first oil passing hole 28 is disposed on the large diameter portion 272, and the second oil passing hole 29 is disposed on the small diameter portion 274. Therefore, in the damping process, the oil not only flows from bottom to top along the adjusting channel 27, but also the adjusting nail 50 is inserted into the adjusting channel 27, and the deeper the screwing-in, the greater the damping, and the better the adjusting operation.
Preferably, the upper surface of the bottom wall of the housing 10 is provided with a ring 16 protruding upwards to surround the adjusting nail 50, the ring 16 is inserted into the bottom of the adjusting channel 27, and the inner wall of the large-diameter portion 272 is provided with an axially extending relief groove 275 corresponding to the first oil passing hole 28. The adjusting channel 27 is sleeved on the circular ring 16, and the structure is more tightly matched. The provision of the relief groove 275 allows oil to pass through the first oil passing hole 28 and then enter the relief groove 275, and then smoothly enter the regulating passage 27.
Preferably, the top surface of the threaded hole 14 is provided with a downwardly projecting positioning ring 18, and the top surface of the threaded connector 52 is provided with an annular positioning groove 54, and the positioning ring is matched and inserted with the positioning groove.
Preferably, the section of the blade 25 is U-shaped, the blade 25 is sleeved into the thrust wing 24 along the axial direction, and the thickness of the inner cavity of the blade is larger than that of the thrust wing, so that the blade can have a rotational degree of freedom in the circumferential direction relative to the thrust wing. A pushing wing notch 242 is formed in the pushing wing 24, a blade notch 252 is formed in the other side surface of the blade corresponding to the pushing wing notch, and the two notches are aligned. The push wing 24 is attached to one side surface of the vane 25 to close the oil passing passage 26 when the rotating shaft 20 rotates forward, that is, one side surface of the vane 25 seals the push wing notch 242, so that the oil passing passage 26 is blocked. When the rotating shaft 20 rotates reversely, the pushing wing 24 engages with the other side of the blade 25 and opens the oil passage 26, that is, the pushing wing notch 242 is opened, so that the oil passage 26 is opened. In addition, the push wing 24 is further provided with a guide groove 244, the inner cavity of the blade 25 is provided with a guide lug 254, and the guide lug is connected with the guide groove in a sliding fit manner, so that the circumferential relative rotation of the push wing 24 and the blade 25 is more reliable.
In this embodiment, the stopper 21 top is still spacing through the clamping ring, and clamping ring and shell 10 opening tight fit still set up the sealing washer in order to improve the sealing performance of attenuator between clamping ring and the stopper, between adjusting nail 50 and the casing 10 in addition.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the utility model, which is defined by the appended claims and their equivalents.
Claims (10)
1. The damper with the adjustable torque comprises a shell and a rotating shaft, wherein the rotating shaft comprises a plug for sealing an opening in the upper part of the shell, an inner column connected below the plug and extending into the shell, and an outer column connected above the plug, two centrosymmetric ribs are arranged on the inner circumferential surface of the shell, two centrosymmetric push wings are arranged on the outer circumferential surface of the inner column, blades are movably sleeved on the push wings, the space between the inner circumferential surface of the shell and the outer circumferential surface of the inner column is divided into two centrosymmetric high-pressure oil cavities and two centrosymmetric low-pressure oil cavities by the ribs, the push wings and the blades, a switchable oil passing channel is formed between the blades and the push wings, and the oil passing channel is closed when the rotating shaft rotates forwards and opened when the rotating shaft rotates reversely, and the damper is characterized in that: the inner column is internally provided with an adjusting channel communicated with the two high-pressure oil cavities and the two low-pressure oil cavities, and the inner column further comprises an adjusting nail extending into the adjusting channel from bottom to top, and the axial movement of the adjusting nail can change the oil passing area of the adjusting channel.
2. The torque adjustable damper as in claim 1, wherein: the adjusting device is characterized in that first oil passing holes are formed in the outer peripheral surface of the inner column corresponding to the two high-pressure oil cavities respectively and communicated with the adjusting channel, second oil passing holes are formed in the outer peripheral surface of the inner column corresponding to the two low-pressure oil cavities respectively and communicated with the adjusting channel, the adjusting channel axially extends through the bottom surface of the inner column, a conical surface portion is arranged in the middle of the side wall of the adjusting channel, the first oil passing holes and the second oil passing holes are located in the upper side and the lower side of the conical surface portion respectively, the upper end portion of the adjusting nail extends into the position of the conical surface portion, and the oil passing area is formed by a gap between the conical surface portion and the adjusting nail.
3. The torque adjustable damper of claim 2, wherein: the adjusting nail penetrates through the bottom wall of the shell, a threaded connector is arranged at the bottom of the adjusting nail, and the threaded connector is screwed with the shell in a threaded mode.
4. The torque adjustable damper of claim 3, wherein: the lower surface indent of casing diapire sets up the screw hole, the nipple spiro union in the middle of the screw hole.
5. The torque adjustable damper as in claim 4, wherein:
when the bottom surface of the threaded joint is flush with the bottom surface of the shell, the size of the oil passing area is 7.59mm2；
The bottom surface of the threaded joint is screwed into the screw hole by 0.1mm, and the size of the oil passing area is 6.99mm2；
The bottom surface of the threaded joint is screwed into the screw hole by 0.2mm, and the size of the oil passing area is 6.4mm2；
The bottom surface of the threaded joint is screwed into the screw hole by 0.3mm, and the size of the oil passing area is 5.83mm2；
The bottom surface of the threaded joint is screwed into the screw hole by 0.4mm, and the size of the oil passing area is 5.27mm2；
The bottom surface of the threaded joint is screwed into the screw hole by 0.5mm, and the size of the oil passing area is 4.71mm2；
The bottom surface of the threaded joint is screwed into the screw hole by 0.6mm, and the size of the oil passing area is 4.17mm2；
The bottom surface of the threaded joint is screwed into the screw hole by 0.7mm, and the size of the oil passing area is 3.65mm2；
The bottom surface of the threaded joint is screwed into the screw hole by 0.8mm, and the size of the oil passing area is 3.13mm2；
The bottom surface of the threaded joint is screwed into the screw hole by 0.9mm, and the size of the oil passing area is 2.63mm2；
The bottom surface of the threaded joint is screwed into the screw hole by 1.0mm, and the size of the oil passing area is 2.13mm2；
The bottom surface of the threaded joint is screwed into the screw hole by 1.1mm, and the size of the oil passing area is 1.65mm2；
The bottom surface of the threaded joint is screwed into the screw hole by 1.2mm, and the size of the oil passing area is 1.19mm2；
The bottom surface of the threaded joint is screwed into the screw hole by 1.3mm, and the size of the oil passing area is 0.73mm2；
The bottom surface of the threaded joint is screwed into the screw hole by 1.4mm, and the size of the oil passing area is 0.28mm2；
The bottom surface of the threaded joint is screwed into the screw hole by 1.5mm, and the size of the oil passing area is 0.00mm2。
6. The torque adjustable damper according to any one of claims 2 to 5, characterized in that: the edge of the upper end of the adjusting nail is provided with a fillet.
7. The torque adjustable damper according to any one of claims 2 to 5, characterized in that: the adjusting channel sequentially comprises a large-diameter part, an arc-shaped surface part, a conical surface part and a small-diameter part from bottom to top, the width of the adjusting channel is gradually reduced from bottom to top, the first oil passing hole is formed in the large-diameter part, and the second oil passing hole is formed in the small-diameter part.
8. The torque adjustable damper as in claim 7, wherein: the upper surface of casing diapire upwards the arch be equipped with encircle adjust the ring of nail, the ring inserts adjust the passageway bottom, the inner wall of big footpath part corresponds first oilhole is equipped with the groove of stepping down of axial extension.
9. The torque adjustable damper as in claim 4, wherein: the threaded hole top surface is equipped with downward convex holding ring, the screwed joint top surface is equipped with annular constant head tank, the holding ring with the constant head tank cooperation is pegged graft.
10. The torque adjustable damper as in claim 1, wherein: the section of the blade is U-shaped, a pushing wing notch is formed in the pushing wing, a blade notch is formed in the other side face of the blade corresponding to the pushing wing notch, the pushing wing is attached to one side face of the blade to close the oil passing channel when the rotating shaft rotates forwards, and the pushing wing is attached to the other side face of the blade and opens the oil passing channel when the rotating shaft rotates backwards; the pushing wings are further provided with guide grooves, guide convex blocks are arranged in the inner cavities of the blades and are connected with the guide grooves in a sliding fit mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122478959.4U CN216555109U (en) | 2021-10-14 | 2021-10-14 | Torque-adjustable damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122478959.4U CN216555109U (en) | 2021-10-14 | 2021-10-14 | Torque-adjustable damper |
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| Publication Number | Publication Date |
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| CN216555109U true CN216555109U (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122478959.4U Active CN216555109U (en) | 2021-10-14 | 2021-10-14 | Torque-adjustable damper |
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| CN (1) | CN216555109U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087307A (en) * | 2021-10-14 | 2022-02-25 | 海益（厦门）建材工业有限公司 | Damper with adjustable torque |
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2021
- 2021-10-14 CN CN202122478959.4U patent/CN216555109U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087307A (en) * | 2021-10-14 | 2022-02-25 | 海益（厦门）建材工业有限公司 | Damper with adjustable torque |
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